CVE-2025-12033: Simple Banner <= 3.0.10 - Authenticated (Admin+) Stored Cross-Site Scripting
The Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'proversionactivationcode' parameter in all versions up to, and including, 3.0.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfilteredhtml has been disabled.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-12033?
CVE-2025-12033 has a medium severity rating due to the potential for stored cross-site scripting vulnerabilities.
How do I fix CVE-2025-12033?
To fix CVE-2025-12033, update the Simple Banner plugin to version 3.0.11 or later.
What versions of the Simple Banner plugin are affected by CVE-2025-12033?
All versions of the Simple Banner plugin for WordPress up to and including 3.0.10 are affected by CVE-2025-12033.
What is Stored Cross-Site Scripting as identified in CVE-2025-12033?
Stored Cross-Site Scripting is a vulnerability where an attacker can inject malicious scripts into web pages viewed by other users.
Is user input a factor in CVE-2025-12033?
Yes, the 'pro_version_activation_code' parameter is a vector for user input that can be exploited in CVE-2025-12033.